| 摘要 |
PURPOSE: To reliably fix a luminaire main body by setting an upper end side width of an operation part continuously arranged part in a dimension frictionally sidable in a vertical slit, and reducing frictional force by setting a lower end side width smaller than the upper end side width. CONSTITUTION: A luminaire main body 1 is inserted into an embedding hole 7 of a ceiling material 6, and an almost U-shaped part 8 and a locking claw 11 are inserted outside through a metal fitting passing opening 5 from inside of the luminaire main body 1, and an operation part 9 is lowered while sliding it on an inside surface of the luminaire main body 1, and the tip of the almost U-shaped part 8 is locked on the reverse of the ceiling material 6. In that cas e, an upper end side width A and a lower end part width B become A>B, and frictional force of a continuously arranged part 17 of the width B becomes weaker than the operation part continuously arranged part 17 of the width A, and the almost U-shaped part 8 naturally rotates in the arrow Q direction with the continuously arranged part 17 of the width A as the rotational center by lowering operation in the arrow P direction by a hand 18 of the operation part 9, and fixing force of the luminaire main body 1 is maintained. When the operation part 9 is lowered by hand, the almost U-shaped part 8 can be comparatively easily rotated with the upper end side of the continuously arranged part 17 as the rotational center, and the main body 1 can be reliably fixed. |
